Typical | Downflow | Installation |
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See VentTermination |
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Shieldingin VentSection. | Coupling | on | inside | ||
and outside | of wall | ||||
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| to restrain | vent pipe | ||
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| I_ | "8" Min. |
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InletPipe | _ | [_ | 20' Max. |
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(not usedon |
| _ | in same | 8" Min. | |
Single | k,_k | atmospheric | zone | ||
model) |
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VentPi_c ; MUST be |
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supl | Horizonta |
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and Vertically |
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| Min. | |
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Max. same
zone
* Increase minimum from 8" to 18" for cold climates (sustained temperatures
below O°F), |
Installation Requirements
1.Install furnace level.
This furnace is NOT to be used for temporary heat of build- ings or structures under construction.
3, Install furnace as centralized as practical with respect to the heat distribution system.
4.Install the vent pipes as short as practical. (See Ventand
Combustion Air Piping section).
5.Maintain clearance for fire safety and servicing. A front
clearance of 30" is required for access to the burner, con- trols and filter.
6.Use a raised base for upflow furnace if the floor is damp or wet at times.
For downflow installations, non combustible subbase must be used under the furnace unless installation is on a non
combustible floor surface. This requirement applies even when a coil box or cabinet is used.
FIRE HAZARD
Failure to install unit on noncombustible subbase can result in death, personal injury and/or property damage.
Place furnace on noncombustible subbase on down-
flow applications, unless installing on
8.For horizontal installations, line contact is permissible only between lines formed by intersection of back and two sides of furnace jacket, and building joists, studs or framing.
9, Residential garage installations require:
Burners and ignition sources installed at least 18" above the floor.
Located or physically protected from possible damage by
avehicle.
10.Local codes may require a drain pan under the entire fur- nace and condensate trap when the furnace is installed in
attic application.
Installation Positions
This furnace can be installed in an upflow, horizontal (either left or right) or downflow airflow position. DO NOT install this furnace on its back. For the upflow position, the return air ductwork can be attached to either the left or right side panel and/or the bottom. For
horizontal and downflow positions, the return air ductwork must be attached to the bottom. The return air ductwork must never be
attached to the back of the furnace.
Furnace Installation Considerations
The installation of the furnace for a given application will dictate the position of the furnace, the airflow, ductwork connections,
vent and combustion air piping. Consideration must be given to the following:
Condensate Trap and Drain Lines
The supplied condensate trap must be attached to the furnace side panel on either the left or right side. For horizontal installa- tions, the drain trap is vertically attached to the side panel below the furnace. A minimum clearance of 6" below the furnace is re-
quired for the condensate trap. Downward slope of the conden- sate drain line from the condensate trap to the drain location must
be provided. Adequate freeze protection of the drain trap and the
drain line must be provided. See "Condensate Drain Trap"section for further details.
Leveling
Proper leveling of the furnace must be provided to insure proper drainage of the condensate from the furnace. The furnace must be level to within 1/4" from front to back and from side to side for upflow and downflow installations or top to bottom for horizontal installations.
Vent and Combustion Air Connections
On the Dual Certified furnace, the vent and combustion air pipes attach to the furnace through the top panel for the u pflow and hori-
zontal installations. For the downflow installation, the vent and
combustion air pipes attach to the furnace through the alternate locations on the furnace side panels.
Note: On the Direct Vent furnace, the vent pipe attaches to the fur- nace through the side panels. The combustion air pipe attaches to the top panel or to the alternate location on the side panel.
On the Single Pipe furnace, the vent pipe attaches to the furnace through the furnace side panels.
Note: Repositioning of the combustion blower is required for the vent pipe connection to the furnace through the "right side" panel.
See "Vent and Combustion Air Piping"section for further details.
44001 111400
